The Bacteria and Archaea

Killham, Ken; Prosser, Jim

doi:10.1016/b978-0-12-415955-6.00003-7

Cited by 16 publications

(14 citation statements)

References 52 publications

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“…Furthermore, the variation of water table affects microbial functional groups. For example, heterotrophic Actinobacteria can degrade recalcitrant polymeric substances such as lignin, chitin, pectin, aromatics, and humic acids (Killham and Prosser, 2015) under aerobic conditions and thus thrive in oxic layers in acidic peatlands (Jaatinen et al, 2007). Lower water table also significantly increased the relative abundance of aerobic Methylocystaceae (methanotrophs) (Supplementary Table S5), which may further impact CH 4 emission in peatland ecosystems (Kwon et al, 2013; Zhong et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Structural Variations of Bacterial Community Driven by Sphagnum Microhabitat Differentiation in a Subalpine Peatland

et al. 2019

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Sphagnum microbiomes play an important role in the northern peatland ecosystems. However, information about above and belowground microbiomes related to Sphagnum at subtropical area remains largely limited. In this study, microbial communities from Sphagnum palustre peat, S. palustre green part, and S. palustre brown part at the Dajiuhu Peatland, in central China were investigated via 16S rRNA gene amplicon sequencing. Results indicated that Alphaproteobacteria was the dominant class in all samples, and the classes Acidobacteria and Gammaproteobacteria were abundant in S. palustre peat and S. palustre brown part samples, respectively. In contrast, the class Cyanobacteria dominated in S. palustre green part samples. Microhabitat differentiation mainly contributes to structural differences of bacterial microbiome. In the S. palustre peat, microbial communities were significantly shaped by water table and total nitrogen content. Our study is a systematical investigation on above and belowground bacterial microbiome in a subalpine Sphagnum peatland and the results offer new knowledge about the distribution of bacterial microbiome associated with different microhabitats in subtropical area.

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Section: Discussionmentioning

confidence: 99%

Structural Variations of Bacterial Community Driven by Sphagnum Microhabitat Differentiation in a Subalpine Peatland

et al. 2019

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“…Even now, most studies report identification only to the phylum level as the depth of sequencing does not always allow the accurate identification of microorganisms at other levels of classification making functional assessment challenging. For instance, classification at the class level could inform that Bacillus and Clostridium , both known cellulose degraders (Killham and Prosser, ), are present and potentially active. At the genus level, information on the potential for ammonia‐oxidation could be obtained if the Nitrosomonas genus is identified.…”

Section: Challengesmentioning

confidence: 99%

Microbial diversity and biogeography in Arctic soils

Malard

Pearce

2018

Environ Microbiol Rep

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Microorganisms dominate terrestrial environments in the polar regions and Arctic soils are known to harbour significant microbial diversity, far more diverse and numerous in the region than was once thought. Furthermore, the geographic distribution and structure of Arctic microbial communities remains elusive, despite their important roles in both biogeochemical cycling and in the generation and decomposition of climate active gases. Critically, Arctic soils are estimated to store over 1500 Pg of carbon and, thus, have the potential to generate positive feedback within the climate system. As the Arctic region is currently undergoing rapid change, the likelihood of faster release of greenhouse gases such as CO , CH and N O is increasing. Understanding the microbial communities in the region, in terms of their diversity, abundance and functional activity, is key to producing accurate models of greenhouse gas release. This review brings together existing data to determine what we know about microbial diversity and biogeography in Arctic soils.

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“…Such changes in the soil environment and nutrient availability cause substantial variation in the biomass and composition of microbial communities in the study area (Tischer et al, 2014b) as well as in other ecosystems (Lauber et al, 2008;Fierer et al, 2009). These changes affect the relative domination of organisms exhibiting various microbial life strategies (Fierer et al, 2007) that are differentiated by growth rate and substrate affinity for the enzyme systems (e.g., copiotrophs with high growth rate and low substrate affinity vs. oligotrophs with low growth rate and high substrate affinity Killham and Prosser, 2015). In turn, such changes affect the turnover and sequestration of nutrients in soil (Cusack et al, 2011;Schimel and Schaeffer, 2012).…”

Section: Introductionmentioning

confidence: 99%